rv1106+inmp441

• fus

  Posts: 4

  Joined: 2025-11-27 10:24

  2026-03-04 3:05

  我想用rv1106驱动inmp441
  dmic_codec: dmic-codec {
  #sound-dai-cells = <0>;
  compatible = "dmic-codec";
  num-channels = <1>;
  status = "okay";
  };
  sound-capture {
  compatible = "simple-audio-card";
  simple-audio-card,name = "INMP441";
  simple-audio-card,format = "i2s"; // INMP441 使用左对齐格式
  simple-audio-card,channels = <1>;
  simple-audio-card,mclk-fs = <256>;
  simple-audio-card,bitclock-master = <&cpu_dai>;
  simple-audio-card,frame-master = <&cpu_dai>;
  
  cpu_dai: simple-audio-card,cpu {
  sound-dai = <&i2s0_8ch>;
  };
  
  codec_dai: simple-audio-card,codec {
  sound-dai = <&dmic_codec>;
  };
  };
  &i2s0_8ch {
  status = "okay";
  rockchip,clk-trcm = <1>;
  rockchip,io-multiplex = <1>;
  rockchip,tdm-chip-delay = <0>;
  pinctrl-names = "default";
  pinctrl-0 = <&i2s0_sclk &i2s0_lrck &i2s0_sdi0 &i2s0_sdo0>;
  assigned-clocks = <&cru MCLK_I2S0_8CH_TX>;
  assigned-clock-rates = <12288000>;
  #sound-dai-cells = <0>;
  };
  我设备树是这么写的，然后到开发板上
  [root@root root]# arecord -l
  **** List of CAPTURE Hardware Devices ****
  card 0: INMP441 [INMP441], device 0: ffae0000.i2s-dmic-hifi dmic-hifi-0 [ffae0000.i2s-dmic-hifi dmic-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
  [root@root root]#
  [root@root root]#
  [root@root root]# aplay -l
  **** List of PLAYBACK Hardware Devices ****
  [root@root root]# zcat /proc/config.gz | grep DMIC
  CONFIG_SND_SOC_DMIC=y
  [root@root root]#
  [root@root root]#
  [root@root root]# zcat /proc/config.gz | grep DUMMY
  # CONFIG_CPUFREQ_DUMMY is not set
  # CONFIG_DUMMY_IRQ is not set
  CONFIG_DUMMY=y
  CONFIG_ROCKCHIP_CIF_USE_DUMMY_BUF=y
  # CONFIG_ROCKCHIP_CIF_USE_NONE_DUMMY_BUF is not set
  # CONFIG_VIDEO_PREISP_DUMMY_SENSOR is not set
  CONFIG_DUMMY_CONSOLE=y
  CONFIG_SND_SOC_DUMMY_CODEC=y
  # CONFIG_USB_DUMMY_HCD is not set
  [root@root root]# arecord -D plughw:0,0 -f S16_LE -r 16000 -t wav test.wav
  arecord: main:831: audio open error: Invalid argument
  [root@root root]# cat /proc/asound/card0/pcm0c/sub0/hw_params
  closed
  [root@root root]# dmesg | grep chan
  [ 0.053686] RPC: Registered tcp NFSv4.1 backchannel transport module.
  [ 1.502649] dw-apb-uart ff4a0000.serial: got rx and tx dma channels
  [ 812.065531] ASoC: dmic-hifi <-> ffae0000.i2s No matching channels
  [root@root root]#
  为什么一直显示不匹配

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